Safety-valve for gas-pipes.



PATENTED JULY 3, 1906.

A. W. JENOZEWSKY. SAFETY VALVE FR GAS PRES.

APPLICATION FILED JULY 3. 1905.

- Umm ESTATES] PATENT onirica.

sA'FTY-vALvr- Fon GAS-PIPES.

l I specification f Letters Patent. ipplimion ned Jurys, A1905. seria-irofzean.

Patenten Jury 3, 1906.

.To all Hmm i6 may concern; l

Be it known that LADOLPH W. JENc'zEwT SKY, a citizen ofthe UnitedStates, and a resi-V dent of Chicago, in vthe/county of Cookand State ofIllinois, have invented certain new and useful Improvements inSafety-Valves lfor Gas-Pipes; and Ir do hereby declare that the folowing is a'full, clear, and exact description thereof, reference beinghad-tov the accompanying drawingsfandto the letters of reference'markedvthereom which form a part of this specification. f'

' This" invention relates to an'eleotrically l, actuated safety-valveintended to be applied to asu ly-pi for illuminating-gas at. a point aous'e'onbuilding for closing the pipe against the passage of gas fromthe inafter describedand pointed outin'the apmain 1n case a fireoccrswithin said house or building and Whichis adapted for operai whichcommunicatewith the pipes A A.

tion from a point distant from the valve.

My invention consists in the matters here.

' pended claims. J

f In carryinggny invention into practice I provide the gas-supply (pipeWithin the'lcellar' l mg, between the gasor basement of. the buil cmeter and theipoint Where the pipe enters the building, with a valvehaving a movable -partor closure which has aten l ency to :issumeaclosed position, togetherwithmeans for holding the valve4 normally .in`its open position, embracing a supporting member or element whichconstitutes part of an electric circuitl and which isadapted to y-beheated when the circuit is closed therethrough to effeet the release ofthe'closure, said circuit be ing normally openfbutadaptedtobe closedbythe use of aswitch located at' an easily- L accessible supporting.member of Side of the uilding and which may fte closed in case of-reWithin thegbuilding.

` While an apparatus embracing themain or boadwtures of my invention maybe embodied in constructlon in Whichtheelectric current is employed to.reliease-the"valve c losureotherwisefthan b the fusing ofthe t e.electric current, lyet theform of construction embracing such j fusiblesupporting member is preferred, b'ef the absence of mechanically-actingparts in cause of simplicity in-construction, due to thesupportingand'releasing means. I also prefer a form of constructionembracing a supporting member adapted to be fused by an electriccurrent, for the reason that the 'fusible supporting member .itself Willbe -valve-.casin valve-cham er B', one end ofwhic 1s shaped .chamber andis lace the -buildinr ''r out-.-

finally fused in' case iirc'should reach the valve, so that the valvewill close automaticaily in case oi fire in the neighborhood of thevalve whether the electric releasing device be brought intooperation or.not.

As illustrated in the accompanying drawin s, Figure .1. isa view' -incentral longitudina section of a valve embodyingV my invention. Fig. 2is a horizontal section thereof,

' taken upon line 2 2'of Fig. i.

' As shown in the said drawings, A indicates a pipe leading from agas-main, A a pipe leading to a meter or toward the distributing-pies'of the building, and B a 'valve-casing W "ch connects the pipes A A.-Said B has a transversel -arrangred tocon'stitute a tapered valve-seat.In Ysaid valve-seat are formed lateral ports b b',

'O-is'a valve-plug of conical form, which is movable endwise in thevalve-chamber and is: adapted to. fit within the conical part oi saidchamber'in such manner Aas toclose the ports .b b or to be shifted intothe otherpart ofsaid valve-chamber to effect the opening of said ports;Said -valve-plug is so constructed as to-have'a tendency to assume itsclosed position either by gravityor other- In the particularconstruction' shown the valve-chamber B is arranged with its central4axis'upright and the valvefplug is adapted to be supported in the upperpart of said valve-chamber, sothat it will tend to its closed position.

D is a cap which closes the top' of the valvepreferably connected withthe v lve-casing by screw-threaded connec- D is azscrewcap. closes thelower end of the valve-chamb er. l

gaged withthe said loop c, and a fusewire F,-

v.Supporting means for holding the valve.

-fallby gravity'to the lower part thereof or to Which is provided at itsends with insulated supports land engagedtbetween its: ends with thesaid link- The supports lfor-.the ends off the fuse-Wire, ashereinshown, consist of two rods G G', which extend-through the cap D of thecasing and are insulated from the same by means of bushings g g ofinsulated material. Said rods G G are shown as provided at theirinnerends With binding-screws TIO g2l g3, by which the'e'nds thefuse-wire nia'y 'be readily -clamped to the rod. The outer ends oftherods are also provided with binding- Screws `g4 g5, by which4conducting-Wires f construction 'prevents any turning of the iobinding-screws'bythe fingers and requires a special tool for operatingthe same, thus preventing unauthorized tampering with -the electricconnections.

The Wires'H H', rods G G', and the fusewire F constitute parts of Aanelectric circuit. `Current forsuch circuit may be` supplied by anysuitable generator-as, 'for instance, by batteries I I. The circuit willinclude a switch'for closing the saine, as indicated in 2o the drawings,bv a key' J, which stands normally open. The switch or kevmaybe lcatedat an) easily-accessible point-as, for

- instance, in a box at the exterior of the build? mir n. which ma) beopened by firemen for the purpose of closing thel switch and releasingthe valve-closure.

.Thefva ve constructed as described will not 'onl be adaptedfor.thereleasc of the closure an( closing'of thevalve through the fusingof 'the' kl7use-\vii*e'F by an electric current, but also automaticallyby the presence of the heat in the immediate neighborhood of the fvalve.It follows ythatjn case the valve-cas be .subjected to a high degree ofheat` as fromafire in i'ts'immediate neighborhood, the fuse-wire willmeltlandvthe valve-closure lassumeits closed position if there should be1 no persoii present to operate the switch in `the electric circuit orshould the electric circuit be broken or out of order'.

To further-insure the prompt closing `of the valve in case of fire -in'its 'immediate neighborhood, I pi'efer to make the su porting- -linkE-of readily-fusible metal, suc as lead. `.\Ioreover, if the said linkbe made of fusible metal the wire F, hereinbefore termed the "fuse-wire,need not necessarily be of such character as to he actuallyfused or,melted by the current passing therethrough, but nei-dimly be raised tosuch temperature asto effect the melting of the link, when the closurewill be released in the saine manner as though the said wire l" wereitself fused b v the current. in othersioi'ls, the wire Fmayconsist ofwire having such resistance to the passage ofa the current that it willbe heated b v thc cur-f i'i-nt. sufficiently to niclt lead or otherreadily-A l'nsible metal. so that thtl closing of the circuit ol' whichSaid wire forms a part will result' in the heating'of-said lire and thcfusing of the'ifiisible` supporting incinbcr engaging tlnl Wire. Thelink Hinstead of being made of' a l fusible' metal may befconstriictedof other material adapted to be iveakeiicd or destroyed by heat, Such ascelluloid.

An advantage gained by the use of an electric releasing device locatedwithin the valvecasinein connection with circuit-wires Whichpass throughthe wall of the valve-casing is that thtl said valvefcasing maybe'permfb' nently closed', and thus rendered safeagainst the leakage ofgas;

I claim my inventiona valve-casing, a movable valve-closure insaidcasing, means for holdingr the valve-closure 1n its open positionembracing a supl. A safety-valve for gas-pipes comprisingr ,ortingmember which is destiuctible by. Q'

l ieat', and an electric circuit adapted to fenerate heat for effectingthe destruction ofithe said supportingv member and the rcleaseof.

the closure.

i '2. 'A safety-valve for gas-pipes comprising a valve-casing, a movablevalve-closi'ire in said 'casing which has a tendency to assume a closedposition', and means for holding said valve-closure in its open positionincluding-a l ,wire Within the casing which `is insulated from thecasing and forms part of an electric fircuit.'v 3. A safety-valveforgas-pipes' comprising La valve-casing, a movable Avalve-closure in said-casing which has a tendency to assume a closed position, and means forholding said j alve-closure iu' its open osition embracing a fusiblewire located in tlie casing and insulated therefrom and forms part'of anelectric circuit. f v: j -4. A safety-valve' for gas-pipes comprisingammo-casing, a, movable valve-closure. 'in said casing which hasa-tendencyto Aassume a. Q closed position, and means for`holding saidvalve-closure in its open position embracing a wire locatedin'thecasinfg and forming part of an electric 'circuit and a link madeof material which is destructibleby hea-t and which is engaged withsaid`wire.

5. 'A safety-valve for gasepipes comprising ADOLPH. W. JENCZEWSKY.Witnesses:

C. CLARENCE POOLE, f I. R. ViLitiNs.

